David:

Have you followed the discussion between me and Jens Axboe recently?  He
pointed out that page_address() shouldn't be used; it should be replaced
by kmap() or kmap_atomic().  There is one such call in
core/message.c:usb_sg_init().  As it stands now, it will probably fail for
sg buffers allocated in high memory.

There's a whole bunch of similar things in usb-storage that I'll have to 
fix, however it seemed worth bringing this to your attention.

Alan Stern



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